Mounting of rotary spindles for twisting and spinning machines and the like.



B. W. FIELLMAN.

MOUNTING 0F ROTARY SPINDLES FOR TWISTING AND SPINNING MACHINES AND THELIKE.

a APPLICATIOH FILED. JUNE 3, I9i6: 7 1,246,409. Pmnted Nov. 13,1917.

2 SHEETS-SHEET I.

I {NVENTOR WITNESSES w B. W. FJELLMAN.

MOUNTING OF ROTARY SPINDLES FOR TWISTING AND SPlNNlNG MACHINES AND THELIKE.

- APPLlCATiON ms'o JUNE 3. 19m.

1 246,409. Patented Nov. 13, 1917.

2 SHEETSSHEET 2,

INVENTOR 6\ By A ltorneys,

thc'spindle is removed.

inv rnn snares PATENT orrron.

BENGT WIKTOR FJELLMAN, OF GOTTENBORG, SWEDEN, ASSIGNOR T0 AKTIEBOLAG ETSVENSK A KULLARGERFABRIKENJ OF GOTTENB RG, SWEDEN, A CORPORATION OFSWEDEN.

MCUNTINGDF ROTARY SPINIDLES FOE TWISTING AND' SPINNING MACHINES AN D THELIKE. 0

Specification of Letters Patent.

Patented Nov. 13, 1917.

Application filed June 3, 1916. Serial No. 101,493.

To all whom it may concern:

-Be it known that I, Braver Huron FJELL- MAN, a subject of the King ofSweden, residing at Gottenborg, in the Kingdom of Sweden, have inventedcertain new and useful Improvements in Mountings of Edtary Spindles forTwisting and Spinning Machines and the like, of which the follow.- ingis a specification.

t has already been proposed to mount rotary spindles for twisting andspinning machines, and the like, on ball bearings. In devices of thiskind hitherto known, the bearing is, generally, so arranged in astationary sleeve holding the spindle that the whole bearing will beremoved with the spindle, when the latter is lifted out or" the sleeve.When the spindle is to be reinserted, it is, therefore, connected withdilliculties to make the bearing enter the sleeve.

It has also been proposed to have the outer ring of the ball bearingfirmly connected to the spindle and to place its'inner ,ring on thestationary sleeve, whereby in ment is objectionable, inasmuchas, incarelessly handling the detached spindle, the balls will easily escapeand be lost.

In order to remove this drawback, the inner ring of the ball bearing isprovided according to the invention, with an annular groove or racewayfor the balls, which'are kept in position, by a ball retainer, on theinner ring, when the spindle and the outer ring are removed.

In the drawings, Figures 1 to 5 show each one form of embodiment of theinvention. Figs. 1 and 2 show'longitudiual sections of means formounting a twisting or spinning spindle. and Figs. 3 to 5 show suchmeans in partial longitudinal section and partial side elevation.

In all the forms of embodiment, the lower part of the spindle 1is-surrounded, in usual manner. by a sleeve 2, which, in turn. issurrounded by an outer sleeve 3 provided, at its outer side, withthreads for securing it Such an arrange to .the frame of the spinning ortwisting machine and formed, at its upper end, as, or provided with, anoil receptacle 31. Confor the bobbin, not shown, and, for the other, aprotective cover for the oil receptacle 31. Attached to the outer sleeve3 isfa hook 7, which is normally held by a spring in the vnectedv to thespindle liS a whirl 4, which, suitably, forms, for one thing, a holder 5shown position, in order to prevent the spindle from being lifted out,when the bobbin is to be removed from the spindle, said hook beingmovable laterally sufficiently to permit the spindle 1 to be lifted outofthe sleeve 2. 7 All details above described are 4. The ring 9 isprovided with a track. for a the ballsflvhich, moreover, are kept inposition by a ball retainer-15. The track onthe outer ring, or thewhirl, of the bearing is made cylindrical and suitably dilates coni-'cally downward so that the outer ring (the whirl) and the spindle can beeasily removed and replaced over the balls retained by the ball cage 15in the track of the ring 9. In this form of embodiment, the spindle 1 inusual manner rests with its conical point in a corresponding recess inthe sleeve 2 which in this form can be made of cast iron. space shouldbe provided between the spindle 1 and the sleeve 2 to prevent frictionbetween the said parts. This space widens downward so as to form an oilchamber, in that the spindle 1 tapers downwardly,'in a known manner. I

The form of embodiment shown in Fig. 2 diilers from that according toFig. 1 only in the inner ring of the bearing being made It is to beobserved that a certain.

integral with the sleeve 2, which to that end disposed substantially inthe plane of theball bearing, and that such ball bearing,

when the parts are in their operative position, is at the upper end ofthe stationary sleeve, the mounting supporting the rotary spindle in asubstantially vertical position.

In the forms of embodiment shown in Figs. 3 to 5, ball bearings are usedwhich 7 are able to support the spindle and at the same time hold itradially. Thus, in this case, the spindle 1 need not rest with its pointon the bottom of the sleeve 2 or on a special disk, but it need onlyhave a lateral guide '11 at its lower end.

In the form of embodiment. shown in Fl 3, the inner ring of the ballbearing formed of a ring 9 secured to the sleeve 2, said ring beingprovided with a track for the series of balls. The outer ring of thebearing formed of a ring 12 secured to the whirl l and provided with atrack partly covering the balls, said track being continued downward bya cylindrical bore, so that the outer ring can be raised together withthe spindle and replaced around the series of balls,

which are kept in position by a ball retainer 1.5.

In Fig. 4 a bearing is shown having two series of balls 8 and 81,respectively, the upper series 81 of which serves to take up axialthrust and bears on. a conical or a spherical part of the track of theouter ring, which latter is made integral with the whirl, while thelower ball series 8 bears on a cylindrical part of the same track and,coi'isequently,

cannot take up but radial pressure. Both series of balls run in tracksin the sleeve 2 forming the inner ring.

Fig. 5 differs from Fig. at only in that the oil receptacle 31 is formedin Fig. 5 of a ring 13 attached to the sleeve 3, while, in Fig. 4, it isformed in the sleeve 3 proper.

in order to avoid any tendency to bending stresses on the spindle, thebearing is placed, in a known manner, so that the cord or driving beltis just opposite the balls or, in the of two or more series of balls,just opposite the series of balls taking up the radial pressure.

surrounding the lower end of the said spindle, and a ball bearingcomprising a series of balls, an outer track ring carried by thespindle, an inner track ring at the upper end of the said stationarysleeve, said inner track ring having a groove forthe balls, and a ballretainer for holding the balls in the said groove when the spindle, andthereby the outer track ring, is removed.

2. The combination with a substantially vertical rotary spindle, ofastationary sleeve surrounding the lower' end of the said spindle, and aball bearing comprising a series of balls, a whirl fast with the spindleand having a belt-engaging portion and provided with an outer trackring, an inner track ring at the upper end of the said stationarysleeve, said inner track ring having a groove for the balls, a ballretainer for holding the balls in the said groove, the belt-engagingportion of the whirl being disposed substantially in the plane of theball bearing.

3. The improved mounting for a rotary spindle as set forth in claim 2,the outer track ring being formed integral with the whirl.

4:. The improved mounting for a rotary spindle as set forth in claim 2,the inner track ring being formed integral with the stationary sleeve.

5. The improved mounting for a rotary spindle as set forth in claim 2,the outer track ring being formed integral with the whirl and the innertrack ring being formed integral with the stationary sleeve.

6. The combination with a rotary spindle, of a stationary sleevesurrounding the said spindle, and a ball bearing comprising a series ofballs for taking up radial load, a second series of balls for taking upaxial thrust and for supporting the spindle, an outer track ring carriedby the spindle, an inner track ring at the said stationary sleeve, saidinner track ring having grooves for the balls, and a ball retainer forholding the balls at the inner track ring, when the spindle, and therebythe outer track ring, is removed.

In testimony whereof I aliiX my signature.

BENGT WIKTOR FJELLMAN.

